The Quest Begins (The "Why") Honestly, I used to think tests were just a safety net you threw on after the code was already written. I’d spend hours crafting a feature, feel that rush of “it works!” and then toss a few assertions at the end—maybe a happy‑path test, maybe not. The result? A codebase that seemed fine until a teammate changed a signature, a requirement shifted, or I came back six months later and suddenly the whole thing felt like a house of cards. I remember one particula...